Initial Commit

README.md

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+Code for reading nmea data from the Serial port and displaying gps data using ipyleafleat.
+
+# All code is untested
+
+Based on [this code](https://github.com/Knio/pynmea2/blob/master/examples/read_serial.py)

render.py

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+from ipyleaflet import Map, Marker
+import pynmea2
+import serial
+import io
+
+ser = serial.Serial('/dev/ttyS1', 9600, timeout=5.0)
+sio = io.TextIOWrapper(io.BufferedRWPair(ser, ser))
+last_time=00
+
+
+def check_last_update(time,last_time):
+    if nmea==last_nmea:
+        return False
+    else:
+        return True
+
+while 1:
+    try:
+        line = sio.readline()
+        msg = pynmea2.parse(line)
+    except serial.SerialException as e:
+        print('Device error: {}'.format(e))
+        break
+    except pynmea2.ParseError as e:
+        print('Parse error: {}'.format(e))
+        continue
+    else:
+        if check_last_update(time=msg.timestamp,last_time=last_time)==True:
+            if last_time==00:
+                m = Map(center=msg.latitude, msg.longitude, zoom=15)
+                marker = Marker(location=center, draggable=False)
+                m.add_layer(marker);
+                display(m)
+            else:
+                marker.location=(msg.latitude, msg.longitude)
+                last_time=msg.timestamp